/**
 * Copyright 2011 FeedDreamwork SIG
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.feeddreamwork.processors;

import java.util.regex.*;

import org.feeddreamwork.Utils;
import org.feeddreamwork.feed.Entry;

public class SetEntrydataProcessor extends FeedEntryProcessor {
	private String source, target, regex;
	
	public SetEntrydataProcessor(String source, String target, String regex) {
		this.source = source;
		this.target = target;
		this.regex = regex;
	}
	
	@Override
	protected boolean processEntry(FeedContext context, Entry entry)
			throws FeedProcessException {
		if (Utils.isNullOrEmpty(source))
			return true;
		String content = entry.get(source);
		Matcher mat = Pattern.compile(regex).matcher(content);
		if (mat.find()) {
			String result = mat.group();
			entry.set(target, result);			
		}
		return true;
	}
	
}